US3274244A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyfluoropolyoxa-alkanamidoalkyl compounds
Assignee: EIDP Inc
•
Filing: 1963-06-14
•
Granted: 1966-09-20
•
Expires: 1983-06-14
Abstract
No abstract record available.
Inventors
- 👤 Alan K Mackenzie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:40
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/06; C07F9/08; C07F9/09; C07F9/091; Y; Y10; Y10S; Y10S516/00; Y10S516/01; Y10S516/07
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
5 words
A POLYFLUOROPOLYOXA-ALKANAMIDOALKANOL OF THE FORMULA
Claim 2
Dependent Claim
5 words
A POLYFLUOROPOLYOXA-ALKANAMIDOALKANOL OF THE FORMULA
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-09-19 | 1970-03-21 | 1970-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-19 | 1974-03-21 | 1974-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-19 | 1978-03-21 | 1978-09-20 | $7700.00 | Window Closed / Lapsed |